A) Bases
B) Sugar Molecules
C) Nucleotides
D) Phosphate groups

A) Genes and Chromosomes X and Chromosomes Y
B) G, T and C Bases
C) Acids, Bases and inorganic salts
D) Phosphate groups, deoxyribose sugars and nitrogen rich bases

A) Single Helix
B) Rectangular
C) Triangular
D) Circular
E) Double Helix

A) sugar and base molecules
B) phosphate and sugar molecules
C) base molecules
D) phosphate and base molecules

A) phosphate and base molecules
B) nitrogen-rich base pairs
C) sugar molecule pairs
D) phosphate and sugar molecules

A) 2
B) 6
C) 8
D) 0
E) 4

A) A
B) T
C) C
D) G

A) C
B) T
C) G
D) A

A) 2
B) 4
C) 8
D) 0

A) the gene
B) the nucleus of the cell
C) the DNA strand
D) the red blood cell

A) 50 (25) pairs
B) 46 (23 pairs)
C) 20 (10 pairs)
D) 100 (50 pairs)

A) 23 (half that of a normal human cell)
B) 92 (double a human cell)
C) 0 (there is no nucleus)
D) 46 (same as a human cell)

A) 23 (half that of a normal human cell)
B) 0 (there is no nucleus)
C) 46 (same as a human cell)
D) 92 (double a human cell)

A) False
B) True

A) Another name for chromosomes
B) Half a chromosome
C) A section of DNA that contains the genetic code
D) Another name for DNA